A few months ago I gave AdBrite a try. Honestly the results were not very good and I stopped using it after about one month. The problem wasn't really with AdBrite per-se, but more with the nature of our site and the visitors - but for some websites AdBrite performs very well. I think it is important to try different affiliate programs to find what works and what does not work for your site. Since most affiliate programs like AdBrite, Adsense, CJ, Kontera, etc are all free all you really have to lose is the amount of time you spend implementing them on your website.
Profiting from Others:I had not used AdBrite for several months but decided to check my account to see what they were planning to do with the $2.68 I had earned while testing them on my site. I was surprised to see that my account balance was over $20! In going through my earnings report I found that these earnings were from affiliates. I had all but forgotten that almost a year ago we posted a how to make money on the Internet page at the site with an AdBrite referral on it - it was from these referrals that I was earning about $0.50/day. These earnings aren't spectacular, but considering the amount of time invested, it's not too bad.
If you haven't tried AdBrite it's worth a try. Even if it does not generate any direct income, try their affiliate program and let others do the work for you - it is by far one of the easiest ways to generate income from your site.